/* RESTORE key ttl serialized-value */
void restoreCommand(redisClient *c) {
- FILE *fp;
- char buf[64];
robj *o;
- unsigned char *data;
long ttl;
+ rio payload;
+ unsigned char *data;
/* Make sure this key does not already exist here... */
if (dbExists(c->db,c->argv[1])) {
return;
}
- /* rdbLoadObject() only works against file descriptors so we need to
- * dump the serialized object into a file and reload. */
- snprintf(buf,sizeof(buf),"redis-restore-%d.tmp",getpid());
- fp = fopen(buf,"w+");
- if (!fp) {
- redisLog(REDIS_WARNING,"Can't open tmp file for RESTORE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"RESTORE failed, tmp file creation error: %s",
- strerror(errno));
- return;
- }
- unlink(buf);
+ /* Temporary hack to get RDB-aligned payload. */
+ payload = rioInitWithBuffer(sdsnewlen(c->argv[3]->ptr+1, sdslen(c->argv[3]->ptr)-1));
+ data = c->argv[3]->ptr;
- /* Write the actual data and rewind the file */
- data = (unsigned char*) c->argv[3]->ptr;
- if (fwrite(data+1,sdslen((sds)data)-1,1,fp) != 1) {
- redisLog(REDIS_WARNING,"Can't write against tmp file for RESTORE: %s",
- strerror(errno));
- addReplyError(c,"RESTORE failed, tmp file I/O error.");
- fclose(fp);
- return;
- }
- rewind(fp);
-
- /* Finally create the object from the serialized dump and
- * store it at the specified key. */
+ /* Create the object from the serialized dump. */
if ((data[0] > 4 && data[0] < 9) ||
data[0] > 11 ||
- (o = rdbLoadObject(data[0],fp)) == NULL)
+ (o = rdbLoadObject(data[0],&payload)) == NULL)
{
addReplyError(c,"Bad data format.");
- fclose(fp);
+ sdsfree(payload.io.buffer.ptr);
return;
}
- fclose(fp);
+ sdsfree(payload.io.buffer.ptr);
/* Create the key and set the TTL if any */
dbAdd(c->db,c->argv[1],o);
int fd;
long timeout;
long dbid;
- char buf[64];
- FILE *fp;
time_t ttl;
robj *o;
unsigned char type;
- off_t payload_len;
+ rio cmd, payload;
/* Sanity check */
if (getLongFromObjectOrReply(c,c->argv[5],&timeout,NULL) != REDIS_OK)
return;
}
- /* Create temp file */
- snprintf(buf,sizeof(buf),"redis-migrate-%d.tmp",getpid());
- fp = fopen(buf,"w+");
- if (!fp) {
- redisLog(REDIS_WARNING,"Can't open tmp file for MIGRATE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"MIGRATE failed, tmp file creation error: %s.",
- strerror(errno));
- return;
- }
- unlink(buf);
-
- /* Build the SELECT + RESTORE query writing it in our temp file. */
- if (fwriteBulkCount(fp,'*',2) == 0) goto file_wr_err;
- if (fwriteBulkString(fp,"SELECT",6) == 0) goto file_wr_err;
- if (fwriteBulkLongLong(fp,dbid) == 0) goto file_wr_err;
+ cmd = rioInitWithBuffer(sdsempty());
+ redisAssert(rioWriteBulkCount(&cmd,'*',2));
+ redisAssert(rioWriteBulkString(&cmd,"SELECT",6));
+ redisAssert(rioWriteBulkLongLong(&cmd,dbid));
ttl = getExpire(c->db,c->argv[3]);
type = o->type;
- if (fwriteBulkCount(fp,'*',4) == 0) goto file_wr_err;
- if (fwriteBulkString(fp,"RESTORE",7) == 0) goto file_wr_err;
- if (fwriteBulkObject(fp,c->argv[3]) == 0) goto file_wr_err;
- if (fwriteBulkLongLong(fp, (ttl == -1) ? 0 : ttl) == 0) goto file_wr_err;
+ if (type == REDIS_LIST && o->encoding == REDIS_ENCODING_ZIPLIST)
+ type = REDIS_LIST_ZIPLIST;
+ else if (type == REDIS_HASH && o->encoding == REDIS_ENCODING_ZIPMAP)
+ type = REDIS_HASH_ZIPMAP;
+ else if (type == REDIS_SET && o->encoding == REDIS_ENCODING_INTSET)
+ type = REDIS_SET_INTSET;
+ else
+ type = o->type;
+
+ redisAssert(rioWriteBulkCount(&cmd,'*',4));
+ redisAssert(rioWriteBulkString(&cmd,"RESTORE",7));
+ redisAssert(c->argv[3]->encoding == REDIS_ENCODING_RAW);
+ redisAssert(rioWriteBulkString(&cmd,c->argv[3]->ptr,sdslen(c->argv[3]->ptr)));
+ redisAssert(rioWriteBulkLongLong(&cmd,(ttl == -1) ? 0 : ttl));
/* Finally the last argument that is the serailized object payload
- * in the form: <type><rdb-serailized-object>. */
- payload_len = rdbSavedObjectLen(o);
- if (fwriteBulkCount(fp,'$',payload_len+1) == 0) goto file_wr_err;
- if (fwrite(&type,1,1,fp) == 0) goto file_wr_err;
- if (rdbSaveObject(fp,o) == -1) goto file_wr_err;
- if (fwrite("\r\n",2,1,fp) == 0) goto file_wr_err;
-
- /* Tranfer the query to the other node */
- rewind(fp);
+ * in the form: <type><rdb-serialized-object>. */
+ payload = rioInitWithBuffer(sdsempty());
+ redisAssert(rioWrite(&payload,&type,1));
+ redisAssert(rdbSaveObject(&payload,o) != -1);
+ redisAssert(rioWriteBulkString(&cmd,payload.io.buffer.ptr,sdslen(payload.io.buffer.ptr)));
+ sdsfree(payload.io.buffer.ptr);
+
+ /* Tranfer the query to the other node in 64K chunks. */
{
- char buf[4096];
- size_t nread;
-
- while ((nread = fread(buf,1,sizeof(buf),fp)) != 0) {
- int nwritten;
-
- nwritten = syncWrite(fd,buf,nread,timeout);
- if (nwritten != (signed)nread) goto socket_wr_err;
+ sds buf = cmd.io.buffer.ptr;
+ size_t pos = 0, towrite;
+ int nwritten = 0;
+
+ while ((towrite = sdslen(buf)-pos) > 0) {
+ towrite = (towrite > (64*1024) ? (64*1024) : towrite);
+ nwritten = syncWrite(fd,buf+nwritten,towrite,timeout);
+ if (nwritten != (signed)towrite) goto socket_wr_err;
+ pos += nwritten;
}
- if (ferror(fp)) goto file_rd_err;
}
- /* Read back the reply */
+ /* Read back the reply. */
{
char buf1[1024];
char buf2[1024];
if (syncReadLine(fd, buf1, sizeof(buf1), timeout) <= 0)
goto socket_rd_err;
if (syncReadLine(fd, buf2, sizeof(buf2), timeout) <= 0)
- goto socket_rd_err;
+ goto socket_rd_err;
if (buf1[0] == '-' || buf2[0] == '-') {
addReplyErrorFormat(c,"Target instance replied with error: %s",
(buf1[0] == '-') ? buf1+1 : buf2+1);
addReply(c,shared.ok);
}
}
- fclose(fp);
- close(fd);
- return;
-file_wr_err:
- redisLog(REDIS_WARNING,"Can't write on tmp file for MIGRATE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"MIGRATE failed, tmp file write error: %s.",
- strerror(errno));
- fclose(fp);
- close(fd);
- return;
-
-file_rd_err:
- redisLog(REDIS_WARNING,"Can't read from tmp file for MIGRATE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"MIGRATE failed, tmp file read error: %s.",
- strerror(errno));
- fclose(fp);
+ sdsfree(cmd.io.buffer.ptr);
close(fd);
return;
strerror(errno));
addReplyErrorFormat(c,"MIGRATE failed, writing to target node: %s.",
strerror(errno));
- fclose(fp);
+ sdsfree(cmd.io.buffer.ptr);
close(fd);
return;
strerror(errno));
addReplyErrorFormat(c,"MIGRATE failed, reading from target node: %s.",
strerror(errno));
- fclose(fp);
+ sdsfree(cmd.io.buffer.ptr);
close(fd);
return;
}
* DUMP is actually not used by Redis Cluster but it is the obvious
* complement of RESTORE and can be useful for different applications. */
void dumpCommand(redisClient *c) {
- char buf[64];
- FILE *fp;
robj *o, *dumpobj;
sds dump = NULL;
- off_t payload_len;
+ rio payload;
unsigned int type;
/* Check if the key is here. */
return;
}
- /* Create temp file */
- snprintf(buf,sizeof(buf),"redis-dump-%d.tmp",getpid());
- fp = fopen(buf,"w+");
- if (!fp) {
- redisLog(REDIS_WARNING,"Can't open tmp file for MIGRATE: %s",
- strerror(errno));
- addReplyErrorFormat(c,"DUMP failed, tmp file creation error: %s.",
- strerror(errno));
- return;
- }
- unlink(buf);
-
- /* Dump the serailized object and read it back in memory.
- * We prefix it with a one byte containing the type ID.
- * This is the serialization format understood by RESTORE. */
- if (rdbSaveObject(fp,o) == -1) goto file_wr_err;
- payload_len = ftello(fp);
- if (fseeko(fp,0,SEEK_SET) == -1) goto file_rd_err;
- dump = sdsnewlen(NULL,payload_len+1);
- if (payload_len && fread(dump+1,payload_len,1,fp) != 1) goto file_rd_err;
- fclose(fp);
+ /* Dump the serailized object and read it back in memory. We prefix it
+ * with a one byte containing the type ID. This is the serialization
+ * format understood by RESTORE. */
+ payload = rioInitWithBuffer(sdsempty());
+ redisAssert(rdbSaveObject(&payload,o)); /* always write >= 1 bytes. */
+ dump = sdsnewlen(NULL,sdslen(payload.io.buffer.ptr)+1);
+ memcpy(dump+1,payload.io.buffer.ptr,sdslen(payload.io.buffer.ptr));
+ sdsfree(payload.io.buffer.ptr);
+
type = o->type;
if (type == REDIS_LIST && o->encoding == REDIS_ENCODING_ZIPLIST)
type = REDIS_LIST_ZIPLIST;
addReplyBulk(c,dumpobj);
decrRefCount(dumpobj);
return;
-
-file_wr_err:
- redisLog(REDIS_WARNING,"Can't write on tmp file for DUMP: %s",
- strerror(errno));
- addReplyErrorFormat(c,"DUMP failed, tmp file write error: %s.",
- strerror(errno));
- sdsfree(dump);
- fclose(fp);
- return;
-
-file_rd_err:
- redisLog(REDIS_WARNING,"Can't read from tmp file for DUMP: %s",
- strerror(errno));
- addReplyErrorFormat(c,"DUMP failed, tmp file read error: %s.",
- strerror(errno));
- sdsfree(dump);
- fclose(fp);
- return;
}
/* -----------------------------------------------------------------------------
projects / redis.git / blobdiff